Endovascular Thrombectomy for Acute Ischemic Stroke Beyond 6 Hours From Onset

Author:

Casetta Ilaria1ORCID,Fainardi Enrico2,Saia Valentina3,Pracucci Giovanni4,Padroni Marina1,Renieri Leonardo5,Nencini Patrizia4,Inzitari Domenico4,Morosetti Daniele6,Sallustio Fabrizio7,Vallone Stefano8,Bigliardi Guido9,Zini Andrea10,Longo Marcello11,Francalanza Isabella12,Bracco Sandra13,Vallone Ignazio M.13,Tassi Rossana14,Bergui Mauro15,Naldi Andrea16,Saletti Andrea17,De Vito Alessandro18,Gasparotti Roberto19,Magoni Mauro,Castellan Lucio20,Serrati Carlo21,Menozzi Roberto22,Scoditti Umberto23,Causin Francesco24,Pieroni Alessio25,Puglielli Edoardo26,Casalena Alfonsina27,Sanna Antioco28,Ruggiero Maria28,Cordici Francesco29,Di Maggio Luca30,Duc Enrica31,Cosottini Mirco32,Giannini Nicola33,Sanfilippo Giuseppina34,Zappoli Federico34,Cavallini Anna,Cavasin Nicola35,Critelli Adriana36,Ciceri Elisa37,Plebani Mauro37,Cappellari Manuel38,Chiumarulo Luigi39,Petruzzellis Marco40,Terrana Alberto41,Cariddi Lucia Princiotta42,Burdi Nicola43,Tinelli Angelica44,Auteri William45,Silvagni Umberto45,Biraschi Francesco46,Nicolini Ettore47,Padolecchia Riccardo48,Tassinari Tiziana49,Filauri Pietro50,Sacco Simona51,Pavia Marco52,Invernizzi Paolo53,Nuzzi Nunzio P.54,Marcheselli Simona55,Amistà Pietro56,Russo Monia57,Gallesio Ivan58,Craparo Giuseppe59,Mannino Marina60,Mangiafico Salvatore5,Toni Danilo47,

Affiliation:

1. Clinica Neurologica, University of Ferrara, (I.C., M.P.).

2. Neuroradiology Unit, University of Florence (E.F.).

3. Stroke Unit, Santa Corona Hospital, Pietra Ligure (V.S.).

4. Stroke Unit, Careggi University Hospital, Florence (G.P., P.N., D.I.).

5. Interventional Neuroradiology Unit, Careggi University Hospital, Florence (L.R., S.M.).

6. Diagnostic Imaging and Interventional Radiology Unit (D.M.), University of Rome Tor Vergata.

7. Stroke Unit (F.S.), University of Rome Tor Vergata.

8. Interventional Neuroradiology Unit (S.V.), Ospedale Civile “S.Agostino-Estense”, AOU Modena.

9. Stroke Unit (G.B.), Ospedale Civile “S.Agostino-Estense”, AOU Modena.

10. Neurology and Stroke Unit, Maggiore Hospital, Bologna (A.Z.).

11. Interventional Neuroradiology Unit, Policlinico G Martino, Messina (M.L.).

12. Stroke Unit, Policlinico G. Martino, Messina (F.I.).

13. Neuroimaging and Neurointervention Unit (NINT), AOU Senese, Siena (S.B., I.M.V.).

14. Stroke Unit, University Hospital “S. Maria delle Scotte”, Siena (R.T.).

15. Interventional Neuroradiology Unit, Città della Salute e della Scienza—Molinette, Turin (M.B.).

16. Department of Neuroscience “Rita Levi Montalcini”, University of Turin (A.N.).

17. Interventional Neuroradiology Unit, University Hospital “Arcispedale S. Anna”, Ferrara (A.S.).

18. Stroke Unit, University Hospital “Arcispedale S. Anna”, Ferrara (A.D.V.).

19. Interventional Neuroradiology Unit, “Spedali Civili”, Brescia (R.G.).

20. Interventional Neuroradiology Unit, IRCCS San Martino-IST, Genova (L.C.).

21. Neurology and Stroke Unit, IRCCS San Martino-IST, Genova (C.S.).

22. Interventional Neuroradiology Unit (R.M.), University Hospital, Parma.

23. Stroke Unit (U.S.), University Hospital, Parma.

24. Neuroradiology Unit (F.C.), Padua University Hospital.

25. Stroke Unit and Neurosonology Lab (A.P.), Padua University Hospital.

26. Vascular and Interventional Radiology Unit (E.P.), Ospedale Civile “Mazzini”, Teramo.

27. Neurology Unit (A.C.), Ospedale Civile “Mazzini”, Teramo.

28. Neuroradiology Unit (A.S., M.R.), “M. Bufalini” Hospital-AUSL Romagna, Cesena.

29. Neurology Unit (F.C.). “M. Bufalini” Hospital-AUSL Romagna, Cesena.

30. Interventional Radiology and Neuroradiology Unit (L.D.M), San Giovanni Bosco Hospital, Torino.

31. Neurology Unit (E.D.), San Giovanni Bosco Hospital, Torino.

32. Neuroradiology Unit (M.C.), AOU Pisa.

33. Neurology Unit (G.N.), AOU Pisa.

34. Radiology, Diagnostic and Interventional Neuroradiology Unit, Policlinico IRCCS San Matteo, Pavia (G.S., F.Z.).

35. Neuroradiology Unit (N.C.), Ospedale dell’Angelo—USSL3 Serenissima, Mestre.

36. Neurology Unit (A.C.), Ospedale dell’Angelo—USSL3 Serenissima, Mestre.

37. Neuroradiology Unit (E.C., M.P.), AOUI Verona.

38. Neurology Unit (M.C.), AOUI Verona.

39. Interventional Neuroradiology Unit (L.C.), Policlinico Bari.

40. Stroke Unit (M.P.), Policlinico Bari.

41. Neuroradiology Unit (A.T.), AOU Circolo, ASST-Settelaghi, Varese.

42. Neurology and Stroke Unit (L.P.C.), AOU Circolo, ASST-Settelaghi, Varese.

43. Interventional Radiology (N.B.), Ospedale SS. Annunziata, Taranto.

44. Stroke Unit (A.T.), Ospedale SS. Annunziata, Taranto.

45. Interventional Neuroradiology Unit, AO Annunziata, Cosenza (W.A., U.S.).

46. Interventional Neuroradiology Unit, Policlinico Umberto I, Rome (F.B.).

47. Emergency Department Stroke Unit, Sapienza University Hospital, Rome (E.N., D.T.).

48. Neuroradiology Unit (R.P.), S. Corona Hospital-ASL2 Savonese, Pietra Ligure.

49. Neurology and Stroke Unit (T.T.), S. Corona Hospital-ASL2 Savonese, Pietra Ligure.

50. Interventional Neuroradiology Unit, PO SS. Filippo e Nicola, Avezzano (P.F.).

51. Department of Applied Clinical Sciences e Biotechnology, University of L’Aquila, L’Aquila (S.S.).

52. Neuroradiology Unit (M.P.), Istituto Ospedaliero Fondazione Poliambulanza, Brescia.

53. Neurology Unit (P.I.), Istituto Ospedaliero Fondazione Poliambulanza, Brescia.

54. Interventional Neuroradiology Unit (N.P.N.), Humanitas Research Hospital, Rozzano.

55. Urgent Neurology and Stroke Unit (S.M.), Humanitas Research Hospital, Rozzano.

56. Interventional Neuroradiology Unit (P.A.), S. Maria della Misericordia Hospital, Rovigo.

57. Stroke Unit (M.R.), S. Maria della Misericordia Hospital, Rovigo.

58. Neuroradiology Unit, SS. Antonio e Biagio e C. Arrigo Hospital, Alessandria (I.G.).

59. Interventional Neuroradiology Unit (G.C.), Ospedale Civico-A.R.N.A.S., Palermo.

60. Stroke Unit (M.M.), Ospedale Civico-A.R.N.A.S., Palermo.

Abstract

Background and Purpose: To evaluate outcome and safety of endovascular treatment beyond 6 hours of onset of ischemic stroke due to large vessel occlusion in the anterior circulation, in routine clinical practice. Methods: From the Italian Registry of Endovascular Thrombectomy, we extracted clinical and outcome data of patients treated for stroke of known onset beyond 6 hours. Additional inclusion criteria were prestroke modified Rankin Scale score ≤2 and ASPECTS score ≥6. Patients were selected on individual basis by a combination of CT perfusion mismatch (difference between total hypoperfusion and infarct core sizes) and CT collateral score. The primary outcome measure was the score on modified Rankin Scale at 90 days. Safety outcomes were 90-day mortality and the occurrence of symptomatic intracranial hemorrhage. Data were compared with those from patients treated within 6 hours. Results: Out of 3057 patients, 327 were treated beyond 6 hours. Their mean age was 66.8±14.9 years, the median baseline National Institutes of Health Stroke Scale 16, and the median onset to groin puncture time 430 minutes. The most frequent site of occlusion was middle cerebral artery (45.1%). Functional independence (90-day modified Rankin Scale score, 0–2) was achieved by 41.3% of cases. Symptomatic intracranial hemorrhage occurred in 6.7% of patients, and 3-month case fatality rate was 17.1%. The probability of surviving with modified Rankin Scale score, 0–2 (odds ratio, 0.58 [95% CI, 0.43–0.77]) was significantly lower in patients treated beyond 6 hours as compared with patients treated earlier No differences were found regarding recanalization rates and safety outcomes between patients treated within and beyond 6 hours. There were no differences in outcome between people treated 6-12 hours from onset (278 patients) and those treated 12 to 24 hours from onset (49 patients). Conclusions: This real-world study suggests that in patients with large vessel occlusion selected on the basis of CT perfusion and collateral circulation assessment, endovascular treatment beyond 6 hours is feasible and safe with no increase in symptomatic intracranial hemorrhage.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Advanced and Specialised Nursing,Cardiology and Cardiovascular Medicine,Clinical Neurology

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